ESClient access

Advanced engineering

The engineering behind everything we build.

Frameworks, coding agents, data access and local inference. Our own tools and implementations of open technology show how we build and evaluate AI systems.

Bun-first backend framework

S42-Core

A modular framework for autonomous backends, combining routing, modules, events, data adapters and clustering into a coherent production experience.
  • Native Bun runtime
  • full, mws and share modules
  • MongoDB, SQL, SQLite and Redis
  • EN/ES documentation
Open project

Browser-first data client

S42 Turso Connect

A web client for managing Turso SQLite databases directly from the browser, with risk classification and explicit controls before destructive operations.
  • Session-only credentials by default
  • Optional encrypted local vault
  • SQL console with risk prompts
  • SQL and CSV export
Open project

AI coding in your terminal

S42 Agent

Take an idea through to changes you can review, right inside your project. S42 Agent brings planning, file editing, command execution and verification into a terminal inspired by QBasic. Choose local or remote models, connect tools through MCP and resume sessions with their context. Use it to build software, investigate bugs and automate tasks while keeping the plan, actions and results in view.
  • Terminal interface and CLI mode for scripts
  • Local models with llama.cpp or remote providers
  • MCP, skills and instructions per project
  • Plans, Git review and verification records
Explore S42 Agent

Structured decisions with local AI

Laya

Turn a message into information your system can act on: the right department, urgency or signals that need attention. Our demo integrates Laya, the open model from Convai Innovations, to classify, score and evaluate criteria with structured results and probabilities. Inference runs on our own infrastructure. It is applied research you can explore for prioritizing tickets, routing requests and connecting AI to business rules.
  • Non-autoregressive decision model with no text generation
  • Categories, scores and probabilities
  • Support ticket and message classification demos
  • JavaScript SDK and JSON API integration examples
Try the Laya demo